KOREA AIRPORTS CORPORATION & ROADTECH Advanced Non-contact Profiler Improving the Quality of Pavement Profile Measurement 1.

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Presentation transcript:

KOREA AIRPORTS CORPORATION & ROADTECH Advanced Non-contact Profiler Improving the Quality of Pavement Profile Measurement 1

KOREA AIRPORTS CORPORATION & ROADTECH Research Point 2 1. Inertial Profiler is fast, but distorts roughness value. Walking Profiler: Max 4km/h (Normal : 2km/h) Dipstick : Max 0.5 km/h Reference : Boeing Runway Roughness Criteria, Walking profiler is too slow, but can get undistorted profile.

KOREA AIRPORTS CORPORATION & ROADTECH 3 Idea : Creating panorama Images Partial Images A B C D E Panorama image

KOREA AIRPORTS CORPORATION & ROADTECH 4 Technology A B C D E 1234 L Total Profile ABDCE Partial Profile A B C D E

KOREA AIRPORTS CORPORATION & ROADTECH Technology 5 Infra Red Laser Line Projector High Resolution Digital Camera Profile (numerical data) Captured Image Image Processing RUNWAY

KOREA AIRPORTS CORPORATION & ROADTECH 6 Test Device Pseudo pavement Laser Line Projector Digital Camera

KOREA AIRPORTS CORPORATION & ROADTECH 7 PC Battery AC Invertor Encoder Test Device Laser Power Controler Digital Camera Laser Line Projector

KOREA AIRPORTS CORPORATION & ROADTECH 8 Device Specifications Digital Camera Resolution : 2048 by 280 frame/Sec Lens : 6.5 forcal Length Non Distortion Lens (With IR Band-Pass Filter) Laser Projector Didode Power : 10W Wavelength : 808nm Spread angle : 50° Line width : >1mm DMI (Distance Measurement Unit) Pulse : 2048/cycle Distance Resolution : 1mm

KOREA AIRPORTS CORPORATION & ROADTECH Preliminary test 9 Pedestrian Sidewalk About 10cm (4 inch) Profile data

KOREA AIRPORTS CORPORATION & ROADTECH Preliminary test(airport) 10

KOREA AIRPORTS CORPORATION & ROADTECH Preliminary test 11 Grooving at Runway Captured Image 50cm (20 inch) overlap

KOREA AIRPORTS CORPORATION & ROADTECH 12 Panorama profiler Digital Camera Laser Projector DMI

KOREA AIRPORTS CORPORATION & ROADTECH 13 Panorama profiler Image capture Laser Projector 1m

KOREA AIRPORTS CORPORATION & ROADTECH 14 Test Speed bump 294m Test Site Walking Profiler Test Unit(Test speed : 40km/hr)

KOREA AIRPORTS CORPORATION & ROADTECH 15 Test Result Cross correlation : 83.4% (IRI filter) Walking Profiler Panorama Profiler

KOREA AIRPORTS CORPORATION & ROADTECH 16 Test Result Cross correlation : 60.1% (None filter) Walking Profiler Panorama Profiler Speed bump

KOREA AIRPORTS CORPORATION & ROADTECH 17 Plan Revise  Image distortion  Profile extraction algorism(nonfiler) Improve  Repeatability(over 92%) Goal  Speed of operation : Minimum 40 km/h (25 mi/h)  Sampling rate (longitudinal interval) : 2mm (0.08 inch)  Resolution (Vertical) : ± 1mm (0.04 inch)  Correlation : Over 90% (Basis Walking Profiler)

KOREA AIRPORTS CORPORATION & ROADTECH 18 Thank you